Machine for reducing the ends of container-bodies



B. K. FORD.

MACHINE FOR REDUCING THE ENDS 0F CONTAINER BODIES.

APPLICATION FILED NOV-1,1920- Patented July 19, 19211.,

3 SHEETSSHEET I- MACHINE FOR REDUCING THE ENDS 0F CONTAINER BODIES.

APPLICATION FILED NOV. I, 1920.

1 38459450 Patented July 19,1921

3 sHEEIs-sHEET 2.

B. K. FORD.

MACHINE FOR REDUCING THE ENDS OF'CONTAINER BODIES.

APPLl-CATION FILED NOV-1, 1920. 1 349,9450 Patented July 19, 1921.

3 SHEETS-SHEET 3.

BEN K. FORD, OF OAK CHICAGO, ILLINOIS, A

MACHINE FOR REDUCING THE ENDS 0F CONT s'rare re DFFIC.

r. BODIES.

To all whom it may concern:

Be it known that 1, BEN K. F0111), a citizen of the United States, and residin at Oak Park, in the county of Cook and tate of Illinois, have invented a new and Improved Machine for Reducing the Ends of Container-Bodies, of which the following is a specification.

This invention relates to means for so changing the diameter of the ends of tubular container bodies formed of paper, box-board or similar fibrous material, that space may be had to receive the flanges of slip covers, and its object is to provide a simple and easily operated mechanism which shall be entirely automatic in its operation.

This invention consists in a pair of rotary carriers for the reducing heads, of rotary means for supporting the container bodies in alinement with said heads, means for moving the heads toward and from each other to engage and then release the container bodies, means to rotate the heads, which heads comprise cup sha ed members, and rollers within the cups'w ich are freely rotatable and which are movable transversely to the axes of the heads.

This invention further consists in the details of construction illustrated in the accompanying drawings and particularly pointed out in the claims.

In the drawings, Figure 1 is an end elevation of a machine embodying my invention. Fig. 2 is a side elevation thereof. Fig. 3 is a vertical central transverse section thereof. Fig. 4 isa longitudinal section and Fig. 5 an end elevation of a reducing head on a larger scale with the inner collar removed. Fig. 6 is an elevation of a finished container. Fig. 7 is a development of the cam-for moving the heads longitudinally.

Similar reference characters refer to like parts throughout the several views.

This machine embodies a bed 1 mounted on legs 2, the end frames 3 and 4 secured to the bed by means of bolts 5, and the screw 6 mounted in the bracket 7 and engaging the nut 6 in the frame 3 whereby this frame may be moved toward and from the frame 4: to accommodate containers of different lengths. A countershaft 8 is journaled in the end frames and carries a large gear 9 that meshes with the gear 10 on the main shaft 11, and the pinions. 12 which mesh with the gear rings 14 .oirthe head 'carriers I Specification of Letters Patent.

15. This main shaft is journaled in the hubs 16 of the stationary cams 17 and 43 which control the individual actions of the reducing heads. The countershaft may be driven in any desired manner.

0n the arms or posts 21 extending inwardly from the Webs 21 of the head carrlers l 5 are mounted the container carriers COIHPIlSlIlg' the rims 19 which are in two parts to permit convenient removal. A separate pair of rings is rovided for each diameterpf container. he pockets 20 are preferably about one-sixteenth inch larger than the containers to be reduced.

The containers are supplied to the container carrier by a chute made up of angle bars 22-23 and automatically roll into the empty pockets of the container carrier, there being four of these angle bars of which two are mounted on each bracket 24: attached to each end frame of the machine. This provides for the differences in length of the containers.

After the ends of the containers have been reduced, the bodies are caused to leave the pockets by means of the curved guides 25 and 26, the former connected to the cross bar 27 attached to one of the angle bars 23, and to the ring 28 rotatably mounted on the main shaft, and the latter secured to the bed by a bolt 5. This curved guide 26 is provided with pins 26 which engage the container bodies and prevent them from moving endwise in the pockets 20 after being disengaged by the heads. In the present case there are nine pairs of heads and as many Patented .nnyia, iaai. Application filed November 1, 1920. Serial No. 421,136.

pockets in each ring 19 of the container carrier.

A reducing head 29 is shown in Figs. 2, 3 and 5. The carrier 15 is rotatable on the main shaft and has a cylindrical holder 30 for each head in which the tubular hub 31 of the head is mounted. This hub is formed with gear teeth 32 which mesh with the gear 33 secured to the shaft which rotates in the same direction as the head carrier but at greater speed so that the hub 31 and the head 29 attached thereto turn in the opposite direction. The teeth 32 in this hub are long so that the hub may be moved longitudinally. The hub 31 is the bearing for a spindle 35 which has a feather 36 slidable in the groove 37 in the inner wall of the head carrier,'and this spindle carries a pin 38 and roller 39 which travels in the groove 41 in the stationary cam 43 which is rigid with the cam, 17. This cam is sov timed that each head will begin to move inwardly when at the point A in Fig.- 3, will be at the inner ends of their movement when at the position B, and remainv so until at the position C, when it movesoutwardly under the pull of the cam 43 until at D it reaches its outer limit.

The container in its finished state is shown in Fig. 6, having a cylindrical body 44 and reduced ends 45 over which may be fitted the slip cover 46. The container blank is a complete cylinder when it enters the pockets 20 in the carrier and is so held. that when the proper pair of reducing heads 29 are moved toward each other, the ends of the container blank will enter these heads until it contacts with the shoulders 48. See Fig. 4. The reduced diameter 49 of the head 29 is the original diameter of the container blank. The spindle 35 is bored eccentrically to receive the shaft 50 which has a pin 51 at its end as eccentric to the shaft as the bore of the spindle is eccentric to its outer surface. On this pin is mounted the presser roller 52 which substantially conforms to the inner wall of the head 29. The outer diameter of the roller 52 is less than the inner diameter of the reduced ends of the container.

On the outer end of the shaft 50 is secured an arm 53 which carries, a roller 54 pressed against the cam 17 by means of a spring 55. Thisarm is adj ustably held on the shaft by means of a collar 56 and a nut 57 or in any other desired manner. While the roller 54 is pressing against the low portion 58 of the cam 17 the pin 51 and the roller 52 are substantially concentric with the head, but when riding on the high portion 59, the pin and roller are eccentric, as indicated in Fig. 3. -The result is that the wall of the container blank is pinched and bent between the cup-shaped head 29 and the presser roller 52 and because of the difference in diameter of these engaging surfaces, the container is rolled between them until it takes the shape shown in Fig- :6.

It will be noticed that the cup-shaped head alone is driven and that the presser collar is free to rotate on the pin 51, a ball bearing 60 being preferably provided to inwhich is not possible without great pres sure between the rollers and' the heads. After the bodies have been conducted from the container carrier by the guide bars 25 and'26, they fall onto the belt 63 and are carried away thereby. The pinions 64 on the shafts 65 are idlers to brace the head carriers.

The details of the various parts, the number of pairs of heads in each machine and the other details of construction may all be changed by those skilled in the art without departing from the spirit of my invention as set forth in the following claims.

I claim i 1. In a machine for reducing the diame ters of the ends of container bodies, the combination with a pairof cup-shaped heads supported in alinement with each other,.

means to rotate the heads, means to move the heads over the ends of the container other, means to rotate the heads, means to move the heads overthe ends of the container bodies the open ends of the heads being of two internal diameters, a roller within each head having its periphery in two diameters so that it may fit against the inner wall of the head, and means to press the rollers against the container body within the heads comprising sleeves coaxial with said heads and having eccentric bores, shafts in said bores and having eccentric pins on their adjacent ends on which said rollers are mounted.

3. In a machine for reducing the diameteI's of the ends of tubular container bodies, the combination of a rotatable cup-shaped head adapted to receive one end of the bodies, the outer portion of the cup being of largerinternal diameter than the inner, a freely rotatable roller within the head adapted to extend into the bodies and having its peripheryof two diameters to fit the inner wall of the head, a pin on which the roller is rotatably mounted, and means to move said pin away from the axis of the head to carry the roller against the wall of the head.

4. In a machine for reducing the diameters of the ends of. tubular containers, the combination of a main shaft and means to rotate the shaft, a pair of head carriers mounted thereon, a container carrier mounted on the shaft between the head carriers, a series of pairs of heads mounted in said eeaaaa as head carriers, means to rotate the shaft, means to rotate the head carriers at a different speed from the shaft, means for moving said heads toward and from the container carrier, said heads being cup-shaped and adapted to receive the ends of the containers, rollers mounted within said heads. and means supporting the rollers and movable laterally of the axes of the heads to cause pressure between the rollers and the heads.

5. In a machine for reducing the diameters of the ends of tubular containers, the combination of a main shaft and means to rotate the shaft, a pair of head carriers mounted thereon, a container carrier mounted on the shaft between the head carriers, :1 series of pairs of heads mounted in said head carriers, means to rotate the shaft, means to rotate the head carriers at a differ ent speed from the shaft, means for moving said heads toward and from the container carrier, said heads being cup-shaped and adapted to receive the ends of the containers, rollers mounted within said heads, and means supporting the rollers and movable laterally of the axes of the heads to cause pressure between the rollers and the heads, said means each comprising a sleeve mounted in alinement with the head and having an eccentric bore, a shaft rotatable in said bore, and a pin at the inner end of the shaft and eccentric thereto, on which the roller is mounted.

6. In a machine for reducing the diameters of the ends of tubular containers, the

' combination of a main shaft and means to rotate the shaft, a pair of head carriers mounted thereon. a container carrier mount-' toward and from the carrier, said heads being cup-shaped and adapted to receive the ends of the containers, rollers mounted within said heads, and means for supporting therollers and movable transversely of the axes of the heads to cause pressure between the rollers and the heads. y 7. In a machine for reducing the diameters of the ends of tubular containers, the

combination of a main shaft and means to rotate the shaft. a pair of head carriers rotatably mounted thereon, a container carrier mounted on the shaft between the head carriers, a series of pairs of heads and a tubular hub extending outwardly from each head and journaled in the head carriers and provided with longitudinal teetlh, a rear on the shaft within each head carrier and meshing with the teeth on the hubs of said heads, a sleeve within each hub and a cam connecting to said sleeves forcausing the sleeves, hubs and heads to move inwardly and outwardly longitudinally of said shaft, means to rotate the head carriers, said heads being cup-shaped and adaptecl to receive the ends of the containers. rollers mounted within said heads, and means, supporting the rollers and adapted to cause them to move transversely of the axes of the heads to cause pressure between the rollers and the heads.

8. In a machine for reducing the diameters of the ends of container bodies, the combination with a pair of cup-shaped heads supported in alinement with each other, means to rotate the heads. means to move the heads over the ends of the container bodies, the open :ends of the heads bein of two internal diameters, a roller within each head having its periphery in two diameters so that it may fit against the inner wall of the head. means to press the rollers against the container body within the heads comprising sleeves coaxial with said heads and having, eccentric bores. shafts in said bores and having eccentric pins on their adjacent ends on which said rollers are mounted, a cam at each end of the machine. and an arm attached to the outer end of each shaft and in engagement with the adjacent cam whereby the shafts are turned to cause the rollers to move transversely to the axes of the heads.

9. In a machine for reducing the dianieters of the ends of container bodies, the combination of a holder for the bodies. a 'cupshaped head movable relative toward and from the holder, means to rotate the head relative to the body. means to cause the body to enter the head, the open end of the head being of two internal diameters, a rollerwithin the head, and means to press the roller against the container body within the head.

BEN K. FORD. 

